₹8,439 Cheap Flights from St. Louis (STL) to Denver (DEN)

View ₹8,439 flight on Sat, 25 Oct 2025Opens in a new window

Popular airlines from Lambert-St. Louis International Airport (STL) to Denver International Airport (DEN)

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Cheap Flights from St. Louis (STL) to Denver (DEN)

Prices were available within the past 7 days and start at ₹8,439 for one-way flights and ₹27,193 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹27,193 Return, found 4 days ago
₹27,193
Return
found 4 days ago
Select Delta flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹27,193 found 4 days ago
Delta
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹28,053 Return, found 4 days ago
₹28,053
Return
found 4 days ago
Select Delta flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹28,053 found 4 days ago
United
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹29,364 Return, found 4 days ago
₹29,364
Return
found 4 days ago
Select United flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹29,364 found 4 days ago
Delta
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹29,369 Return, found 4 days ago
₹29,369
Return
found 4 days ago
Select Delta flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹29,369 found 4 days ago
Delta
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹29,767 Return, found 4 days ago
₹29,767
Return
found 4 days ago
Select Delta flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹29,767 found 4 days ago
American Airlines
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹30,198 Return, found 4 days ago
₹30,198
Return
found 4 days ago
Select American Airlines flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹30,198 found 4 days ago
Delta
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹30,203 Return, found 4 days ago
₹30,203
Return
found 4 days ago
Select Delta flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹30,203 found 4 days ago
United
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹30,224 Return, found 4 days ago
₹30,224
Return
found 4 days ago
Select United flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹30,224 found 4 days ago
Delta
Wed, 6 Aug - Fri, 8 Aug
STL
St. Louis
DEN
Denver
₹30,229 Return, found 4 days ago
₹30,229
Return
found 4 days ago
Select Delta flight, departing Wed, 6 Aug from St. Louis to Denver, returning Fri, 8 Aug, priced at ₹30,229 found 4 days ago

Find the cheapest month to fly from St. Louis (STL) to Denver (DEN)

September is typically the cheapest month to fly

From ₹4,114 - ₹11,323 per traveller.

Graph displaying average flight prices per month

Flight from St. Louis to Denver route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Denver Intl.
Return price
₹27,193
Distance
1228 km
Average flight time
1 hour 18 mins

St. Louis to Denver Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from St. Louis to Denver will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Denver.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with STL to DEN flights that won’t make your bank account wince. Ready to temporarily leave behind St. Louis for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to DEN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from St. Louis Lambert International Airport to DIA airport?
Pack your bags, because round-trip flights from Lambert Field to DIA airport start from ₹27,193. That's based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to nab the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from St. Louis Lambert International Airport to Denver Intl. Airport (DEN)?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Lambert Field to DIA airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for St. Louis Lambert International Airport to DIA airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lambert Field to Denver Intl. Airport (DEN)?
That new movie you've been eager to see will have to wait — the flight distance between Lambert Field and Denver Airport is only 1,250 kilometres. The captain will be instructing you to put your seat upright for landing before you know it.
Which airlines fly direct from STL to DEN?
Southwest Airlines (WN) is one of the top choices for many travellers flying between Lambert Field and DEN. Select from the 178 flights it operates on this route each month. You could also take a look at fares with United Airlines (UA). This carrier operates 121 flights a month between St. Louis and Denver.
Are St. Louis Lambert International Airport to Denver Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from St. Louis Lambert International Airport to Denver Airport can be hit-or-miss. It is possible to find a bargain, but then again, you could miss out entirely! If you'd prefer to play it safe and start your trip planning early on, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines release their prices so far in advance. Our top tip? Check back often as prices are updated frequently.

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